Detectionhightest

RDP to HTTP or HTTPS Target Ports

Detects svchost hosting RDP termsvcs communicating to target systems on TCP port 80 or 443

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Florian Roth (Nextron Systems)Created Fri Apr 29Updated Thu Jul 14b1e5da3b-ca8e-4adf-915c-9921f3d85481windows

Log Source

WindowsNetwork Connection

ProductWindows← raw: windows

CategoryNetwork Connection← raw: network_connection

Events for outbound and inbound network connections including DNS resolution.

Detection Logic

detection:
    selection:
        Image|endswith: '\svchost.exe'
        Initiated: 'true'
        SourcePort: 3389
        DestinationPort:
            - 80
            - 443
    condition: selection

False Positives

Unknown

False positive likelihood has not been assessed. Additional context may be needed during triage.

References

MITRE ATT&CK

Tactics

TA0011 · Command and Control TA0008 · Lateral Movement

Techniques

T1572 · Protocol Tunneling

Sub-techniques

T1021.001 · Remote Desktop Protocol

CAR Analytics

2013-07-002 · CAR 2013-07-002

Rule Metadata

Rule ID

b1e5da3b-ca8e-4adf-915c-9921f3d85481

Status

test

Level

high

Type

Detection

Created

Fri Apr 29

Modified

Thu Jul 14

Author

Florian Roth (Nextron Systems)

Path

rules/windows/network_connection/net_connection_win_rdp_to_http.yml

Raw Tags

attack.command-and-controlattack.t1572attack.lateral-movementattack.t1021.001car.2013-07-002

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